Type
Subchron
Age range
157.57–157.4 Ma
Late Jurassic
Oxfordian
M27n
M27r
M28n.1n
157.57157.56157.55157.54157.53157.52157.51157.50157.49157.48157.47157.46157.45157.44157.43157.42157.41157.40